#ifndef _LOG_H
#define _LOG_H

#include <fstream>

class ChatWindow;

/**
 * The Log Class : Useful to write debug or info messages
 */
class Logger
{
    public:
        /**
         * Constructor.
         */
        Logger();

        /**
         * Destructor, closes log file.
         */
        ~Logger();

        /**
         * Sets the file to log to and opens it
         */
        void setLogFile(const std::string &logFilename);

        /**
         * Sets whether the log should be written to standard output.
         */
        void setLogToStandardOut(bool value) { mLogToStandardOut = value; }

        /**
         * Enables logging to chat window
         */
        void setChatWindow(ChatWindow *window) { mChatWindow = window; }

        /**
         * Enters a message in the log. The message will be timestamped.
         */
        void log(const char *log_text, ...)
#ifdef __GNUC__
            __attribute__((__format__(__printf__, 2, 3)))
#endif
            ;

        /**
         * Log an error and quit. The error will pop-up on Windows and Mac, and
         * will be printed to standard error everywhere else.
         */
        void error(const std::string &error_text);

    private:
        std::ofstream mLogFile;
        bool mLogToStandardOut;
        ChatWindow *mChatWindow;
};

extern Logger *logger;

#endif
